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Fixed focus lens of cctv camera
Nov 16, 2017

Fixed focus lens that only has a fixed focal length lens, only one focal length, or only one field of view. Fixed focus lens without zoom function
The design of the fixed focus lens is much simpler than that of the zoom  lens. However, the general zoom lens will have an impact on the imaging during zooming. The biggest advantage of the fixed focus lens relative to the zooming machine is that the focusing speed is fast and the image quality is stable. Many have fixed-focus lens digital camera shooting images of moving objects clear and stable, very accurate focus, the picture is exquisite, grainy is very slight, metering is also more accurate.

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